PDF malware analysis — malicious · 431b7d341f184fed

MALICIOUS

PDF

9.3 KB Created: 2010-06-11 13:03:30 Authoring application: H8U8qT08sxBbTI (via dJh3ov0OJMVF)

MD5: f9ef34468d67ea4657bb6bd6f93c6b2e SHA-1: 7ad79b39f558aae43a8fb40da5d325fdbf11f8ce SHA-256: 431b7d341f184fed4ac38647040aed4fcfd37d9bd3a5f4203398d9fec5e4abf2

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. A high-confidence heuristic, ML_NYX_PDF_MALICIOUS, along with a PDF_EVAL firing, suggests the JavaScript is malicious and likely uses eval() to execute obfuscated code. The extracted artifact 'javascript_obj0007_000.js' is also flagged as suspicious. The overall behavior points to a malicious PDF designed to exploit vulnerabilities and download further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `43d0c85012e0e73296b43a29631a83730f55af4e1dc1272b7ed56a2e69706e6b`	pdf-javascript-stream	PDF /JS object 7 at offset 0x237	8158 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.